Redundant systems, methods, and apparatus for use in arc flash prevention systems

(19)

(11)

EP 2 424 060 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	09.07.2014 Bulletin 2014/28

(43)	Date of publication A2:
	29.02.2012 Bulletin 2012/09

(21)	Application number: 11178937.6

(22)	Date of filing: 25.08.2011

(51)

International Patent Classification (IPC):

H02H 1/00^(2006.01)
H02H 3/05^(2006.01)

H02H 3/04^(2006.01)

(84)	Designated Contracting States:
	AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
	Designated Extension States:
	BA ME

(30)

Priority:

31.08.2010 US 872734

(71)	Applicant: General Electric Company
	Schenectady, NY 12345 (US)

(72)	Inventors:
	Hooker, John Kenneth Louisville, KY Kentucky 40225 (US) Lafond, Michael Paul Plainville, CT Connecticut 06062 (US) Mason Jr., Henry Hall Plainville, CT Connecticut 06062 (US) Bardolph, Megan Dalene Grand Rapids, MI Michigan 49525 (US)

(74)	Representative: Illingworth-Law, William Illingworth
	GPO Europe GE International Inc. The Ark 201 Talgarth Road Hammersmith London W6 8BJ London W6 8BJ (GB)

(54)	Redundant systems, methods, and apparatus for use in arc flash prevention systems

(57) A hub (106) for use with a circuit protection system includes a first input port (218) configured to communicatively couple to at least one sensor device (102), wherein the at least one sensor device includes a light source (206) and at least one light sensor (204). The hub also includes a first output port (226) configured to communicatively couple to at least one controller (124), and a processor (236) communicatively coupled to the first input port and to the first output port. The processor is configured to receive a sensor status signal from the at least one light sensor (204) via the first input port in response to a test pulse emitted by the light source, and transmit a hub status signal to the at least one controller (124) via the first output port based at least in part on the sensor status signal.

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